I have exactly same laptop and my works fine (Ubuntu 9.10) but with this xorg.conf
I am use 195.22 driver, previous was 190.42. Both works perfetly (VDPAU on HD video, 3D etc)
Warning: blogpost on link use typografic commas, but you need normal.
WIFI have problem on 2.6.31 kernels, it is fixed on ubuntu, but fix is not released into updates. Workarround is use "pci=use_crs" kernel parameter (/etc/default/grub file details https://bugs.launchpad.net/ubuntu/+s...ux/+bug/407824